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We report our studies on fabrication and superconducting properties of YBa 2 Cu 3 O 7- y thin films prepared by d.c. magnetron sputtering from a single "1-2-3" target and subsequent heat treatment. The films exhibited sharp resistive transitions and zero-resistance temperatures above 85 K. XPS results indicate that the stoichiometry of our films was close to the target composition.
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Gierłowski et al. (1989) studied this question.
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